<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
        body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
    </style>
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=4IU3oIAMpZhfWZsMu7xzqBBAf6vMHcoa"></script>
    <title>城市列表控件</title>
</head>
<body>
    <div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
var mp = new BMap.Map("allmap");
//var point = new BMap.Point(116.404, 39.915);
mp.centerAndZoom("淄博", 14);
mp.enableScrollWheelZoom();
mp.enableInertialDragging();

mp.enableContinuousZoom();

var size = new BMap.Size(10, 20);
mp.addControl(new BMap.CityListControl({
    anchor: BMAP_ANCHOR_TOP_LEFT,
    offset: size,
       切换城市之间事件
       onChangeBefore: function(){
          alert('before');
       },
       切换城市之后事件
       onChangeAfter:function(){
         alert('after');
       }
}));
</script>